If the source of a move is in spill slot, the reload may be folded to essentially a load from stack slot. It's ok to mark the stack slot value as available for reuse. But it should not be clobbered since the destination of the move is live.

llvm-svn: 41109

Update .cvs file

llvm-svn: 41106

hard to catch bugs with retaddr lowering

llvm-svn: 41104

llvm-svn: 41103

llvm-svn: 41101

llvm-svn: 41100

llvm-svn: 41099

regex used to convert all the others because the first '|' was on a
separate line.

llvm-svn: 41098

llvm-svn: 41097

llvm-svn: 41096

Use dominance frontier to fixup incoming edges of successor blocks not domianted by DeadBB.
Use df_iterator to walk and delete basic blocks dominated by DeadBB.

llvm-svn: 41095

llvm-svn: 41094

llvm-svn: 41093

llvm-svn: 41091

llvm-svn: 41090

llvm-svn: 41087

- If the defs of a spilled rematerializable MI are dead after the spill store is deleted, delete
  the def MI as well.

llvm-svn: 41086

llvm-svn: 41085

Fix for PR1596: AdjustCopiesBackFrom() should conservatively check if any of its sub-registers may overlap with the interval of the copy that's being coalesced.

llvm-svn: 41084

If a MI's def is remat as well as spilled, and the store is later deemed dead, mark the def operand as isDead.

llvm-svn: 41083

llvm-svn: 41082

they're not related to eliminating a load.

llvm-svn: 41081

llvm-svn: 41080

llvm-svn: 41078

the function.

llvm-svn: 41077

llvm-svn: 41075

llvm-svn: 41074

llvm-svn: 41073

using the count script instead of wc -l

llvm-svn: 41072

llvm-svn: 41070

no more uses within the MBB and the spilled value isn't live out of the MBB.
Then it's safe to delete the spill store.

llvm-svn: 41069

llvm-svn: 41068

spilled value is available for reuse.

llvm-svn: 41067

llvm-svn: 41064

llvm-svn: 41063

llvm-svn: 41062

llvm-svn: 41061

Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized.

llvm-svn: 41060

llvm-svn: 41059

llvm-svn: 41054